Incoloy825 similar brand
NS 142 (China), NC2 1FeDu (France), W. N R.2.4858 NiCr 2 16 (Germany) NA 16 (UK) Incoloy825, UNS NO8825 (UK).
Incoloy825 chemical composition Ni: 38-46cr:19.5-23.5fe: C: ≤ 0.025mn: ≤1.0si: ≤ 0.5mo: 2.5-3.5cu:1.5-3.0.
Characteristics of Incoloy825 alloy
Good stress corrosion cracking resistance.
Good pitting and crevice corrosion resistance.
Good resistance to positive and non-oxidizing thermal acidity.
● Good mechanical properties at room temperature and high temperature up to 550℃
● Certification of pressure vessels with manufacturing temperature up to 450℃
Application field of Incoloy825 alloy
Incoloy 825 is widely used in various industrial fields where the service temperature does not exceed 550℃.
Typical applications include:
● Heating pipes, containers, baskets and chains used in sulfuric acid pickling plants.
● Seawater cooling heat exchanger, seafood pipeline system and acid gas environment pipeline.
● Heat exchangers, evaporators, washing and dipping pipes in phosphoric acid production.
● Air heat exchanger in petroleum refining
● Food engineering
● Chemical process
● Flame retardant alloys for compressed oxygen applications.
Incoloy825 welding
Incoloy 825 is suitable for welding the same material or other metals by any traditional welding process, such as tungsten inert gas shielded welding, plasma arc welding, manual sub-arc welding, metal inert gas shielded welding and metal inert gas, among which pulse arc welding is selected. When manual arc welding is used, it is recommended to use shielding gas with a mixed composition of (Ar+He+H2+CO2).
Incoloy 825 must be welded in an annealed state, and stains, dust and various marks should be removed with a stainless steel wire brush. When welding the root of the weld, in order to obtain the best quality root weld, the operation must be very careful (argon gas 99.99), so that the weld will not produce oxide after the root weld. The color produced in the welding heat affected zone should be brushed off with a stainless steel brush when the welding zone is not cooled.
welding material
For the gas shielded welding process, the following filler metals are recommended.
Metal covered covered electrode:
Nick rover S 6020-FM625
Material No.2.483 1
SG- NiCr2 1Mo9Nb
AWS A5. 14: ERNiCrMo-3
Yaopi covered electrode
Material No.2.462 1
Nickel-chromium-molybdenum-niobium alloy
AWS A5. 1 1: ENiCrMo-3